Broadcom ACPL-33JT Automotive 2.5A Gate Drive Optocoupler

Broadcom ACPL-33JT Automotive 2.5A Gate Drive Optocoupler is an integrated flyback controller for an isolated DC-DC converter. The ACPL-33JT features IGBT desaturation sensing and fault feedback. The optocoupler has a peak output current of 2.5A max and a miller clamp sinking current of 2A. The Broadcom ACPL-33JT is qualified to AEC-Q100 grade 1 test guidelines with an automotive temperature range of -40°C to +125°C. This full feature optocoupler is housed in a compact, surface-mountable SO-16 package.


  • Qualified to AEC-Q100 Grade 1 test guidelines
  • -40°C to +125°C automotive temperature range
  • Integrated flyback controller for isolated DC-DC converter
  • 16V regulated output voltage 
  • 2.5A max. peak output current 
  • 2A Miller clamp sinking current 
  • 4.5V to 5.5V input supply voltage range 
  • > 50kV/μs at VCM = 1500V Common Mode Rejection (CMR) 
  • 250ns max. propagation delay
  • Integrated fail-safe IGBT protection
    • Desat sensing, "soft" IGBT turn-off, and fault feedback
    • Under Voltage Lock-Out (UVLO) protection with feedback
  • High noise immunity
    • Miller current clamping
    • Direct LED input with low input impedance and low noise sensitivity
  • SO-16 package with 8mm clearance and creepage
  • Regulatory approvals
    • UL1577, CSA
    • IEC/EN/DIN EN 60747-5-5


  • Automotive isolated IGBT/MOSFET inverter gate drive
  • Automotive DC-DC converter
  • AC and brushless DC motor drives
  • Hybrid and plug-in hybrid power train inverter
  • Uninterruptible Power Supplies (UPS)

Functional Diagram

Block Diagram - Broadcom ACPL-33JT Automotive 2.5A Gate Drive Optocoupler
Publicado: 2016-06-02 | Atualizado: 2022-03-11